Yesterday, an exciting new addition to the Smithsonian’s National Museum of Natural History arrived: a 66.5 million year old Tyrannosaurus rex.

In honor of the T. rex’s arrival, the Smithsonian is encouraging people to get up and dance. They’ve teamed up with Alaskan artist and musician Ray Troll and his band, The Ratfish Wranglers, to create "National Rex," an original song celebrating the dinosaur’s arrival and they want you to send in a 30 second video dancing to your own original "Rex Two-Step."

"Here at Let’s Move!, we’re all for getting active, and dancing is a great way to add activity to your daily routine," the campaign said. "So why not grab a camera and show the T. rex how you move?"

"Whether your dance involves classical steps or a modern flare, as long as you’re moving and having fun, you could be featured on Twitter or Facebook!" they said.

"On April 15, the Smithsonian's National Museum of Natural History is welcoming the newest member of our family…a T. rex!" the Smithsonian said. "We are so excited we want to sing and dance!"